Olympic champion Dalilah Muhammad has broken one of the longest standing world records in women's athletics.
The 29-year-old clinched victory in the 400-metre hurdles at the US Championships in Des Moines, Iowa, clocking a time of 52.20 seconds.
She was 0.14 seconds faster than Russia’s Yuliya Pechonkina, who had set the previous world record 16 years ago.
Dalilah was already a notable runner because of her gold medal at the 2016 Rio de Janeiro Olympics in the same event.

Pakistan survive Dutch scare in T20 World Cup opener
Ekaterina Alexandrova rallies to advance to Abu Dhabi finals
Sooryavanshi's record 175 guides India to Under-19 World Cup glory
India's Rana ruled out of T20 World Cup, replaced by Siraj
Dubai Basketball beats Real Madrid at home with decisive comeback
